XML 91 R82.htm IDEA: XBRL DOCUMENT v3.21.1
LEASES - Assets and Liabilities of Lessee (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Operating leases    
Operating lease right-of-use assets $ 603 $ 608
Accounts payable and accrued liabilities 111 101
Operating lease liabilities 501 510
Total operating lease liabilities 612 611
Finance leases    
Property, plant and equipment, at cost 76 63
Accumulated depreciation (28) (19)
Property, plant and equipment, net 48 44
Current maturities of long-term debt and finance lease obligations 1 0
Long-term debt and finance lease obligations 64 54
Total finance lease liabilities $ 65 $ 54
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent